Jake S. Del Mastro

Yeah I did build a sync combiner, 2 actually. I tested with two monitors/TVs (Sony KV1311cr & KV25XBR, according to the manual the kv25XBR has a vsync input but I...

@gingerbeardman, as detailed in [issue#128](https://github.com/ramapcsx2/gbs-control/issues/128), downscaling to 240p from RGBHV sources can have serious artifacts. I don't 100% understand why this is, but it is fixed by using a sync...

@gingerbeardman sure, its pretty simple I think  The 480p RGBHV (VGA) signal goes in through the blue cable, into the XNOR sync converter (powered by 5v on vga pin9)....

@twotone8, The clear one I 3d printed and the black one I can't recall, it was sitting in my parts bin for a while, but you can get similar ones...

Just wanna confirm, after testing, using an [XNOR type sync combiner](https://www.epanorama.net/faq/vga2rgb/vga2rgbs_ttl.gif) at the input to the GBS does in fact get around this issue